Improvement in wagon-brakes



22.] w. T. HAMILTON.

improvement in Wagon Brakes. No.118,530.

Patented Aug. 29, -1871.

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WILLIAM T. HAMILTON, OF LUTHERSBURG, PENNSYLVANIA.

IMPROVEMENT IN WAGON-BRAKES.

I Specification forming part of Letters Patent No. 118,530, dated August29, 1871.

To all whom it may concern:

Be it known that 1, WILLIAM T. HAMILTON, of Luthersburg, in the countyof Clearfield and State of Pennsylvania, have invented a new and usefulImprovement in Mode of Operating W'agon-Brakes; and I do hereby declarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to make and use the same,reference being had to the accompanying drawing forming part of thisspecification.

My invention relates to improvements in the class of wagon-brakes inwhich a segmental or sector-shaped wheel is employed in combination witha rack-bar; and the invention consists in the improved mechanismhereinafter described for operating a brake.

In the accompanying drawing, Figure 1 represents the invention attachedto the wagon. Fig. 2 is a vertical section of Fig. 1 taken on the line00 w.

Similar letters of reference indicate corresponding parts.

A represents the wagon-body, to which my improvement is attached. B is acasting firmly bolted or fastened thereto. 0 is a sector orsegment-wheel, which is fast on the shaft D. E is the working lever onthe outer end of the shaft. F is a rack which engages with thesector-wheel G. This rack is confined by guide-ways Gr Gr,

(see Fig. 2,) so that it is always inmesh with the sector, and has alongitudinal motion imparted to it when the sectorwheel is turned ineither direction. The side rod, which is connected with the brake-bar,is attached to the end of the rack F by means of the hole H. When therack is thrown to the left, as seen in the drawing, the brake isapplied. The top of the rack is provided with ratchet-teeth. I. J is apawl connected with the plate B, which engages with the ratchet-teeth ofthe rack, and holds the rack and consequently the brake in any requiredposition. By this arrangement the brake is held in contact with thewheels in going down a hill, and for any length of time. Kis adetaching-lever whose fulcrum is on the plate B. By pressing down on theend L of the lever the pawl J will be raised from the ratchet-teeth,when the rack may be thrown in the opposite direction or to the right,which detaches the brake.

Having thus described my invention, I claim as new and desire to secureby Letters Patent In combination with the rack F, the ratchetteeth I,pawl J, and detaching-lever K for holding the brake to the wheels andreleasing the same therefrom, substantially as described.

WILLIAM T. HAMILTON. Witnesses:

F. K. ARNOLD, J. H. EDINGER.

